Question: When did Yale University have a student count of 6,859?
Paraphrase: In which year were there 6,859 students attending Yale University?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q49112 p:P2196 ?s . ?s ps:P2196 ?x filter(contains(?x , '6859.0')) . ?s pq:P585 ?value}